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Finding the Fourth Proportional to 318,301.25, 477,350.59 and 105,029.40

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Solution

The fourth proportional to 318,301.25, 477,350.59 and 105,029.40 is: 157,510.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,301.25 : 477,350.59 = 105,029.40 : x
  2. Step 2: Convert to fraction form
    318,301.25/477,350.59 = 105,029.40/x
  3. Step 3: Cross multiply
    318,301.25x = 477,350.59 × 105,029.40
  4. Step 4: Simplify right side
    318,301.25x = 50,135,845,794.77
  5. Step 5: Solve for x
    x = 50,135,845,794.77/318,301.25
  6. Step 6: Final answer
    x = 157,510.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.